The FMCK includes four front-mount antenna cables with female TNC connectors on one end and a bulkhead male TNC on the other end. The male connectors mount in the provided knockouts of the RM-S and RM-D rack mount kits. The four included cables are enough for two receivers.

The UAA-500 is a broadband UHF amplifier with selectable 3dB and 10dB amplification settings. Antenna signal amplifiers are used to make up for losses in the cable run, they do not extend the operating range of the wireless microphone.